John, Don't you mean the FETs? The one that melted the plastic insulator is IRF5210. There are 2 of them on the board. The other 2 FETs are IRF540. I have more plastic insulators to replace the melted one so I could replace the FETs and see what happens. The FETs have thermal pads behind them. They appear undamaged. Do I need to replace them?
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